Cuban Foreign Minister Bruno Rodríguez Parrilla declared there is “no evidence” that American diplomats have suffered acoustic attacks, leaving them with hearing loss and brain damage, at a press conference Tuesday responding to the expulsion of 15 Cuban diplomats from U.S. soil.

The U.S. State Department confirmed, also on Tuesday, that they had requested the withdrawal of Cuban embassy staff in Havana, accusing the communist Castro regime of being either unwilling or unable to protect American diplomats as dictated by the 1961 Vienna Convention. American officials have confirmed 22 cases of illness or injury in U.S. diplomats and their families working at the embassy in Havana and have not blamed Cuba for the attacks in question.

Nonetheless, a State Department official told reporters in a telephone briefing that the U.S. “could not come to any other conclusion” than that their diplomats were targeted and attacked.

“There does not exist evidence of the occurrence of the alleged incidents, or the causes and origin of the health symptoms American diplomats and families notified us of,” Rodríguez told reporters in an extensive press briefing, quoted in full by communist propaganda outlet Granma, which referred to the attacks on U.S. diplomats in scare quotes.

In response to another reporter’s question, Rodríguez repeated that “the reality is that there is not a single shred of evidence regarding the occurrence of the alleged incidents, or their causes, or their origins, as the tongue-twister from the State Department official makes clear.”

The withdrawal of the Cuban embassy staff from Washington, Rodríguez argued, was “unjustified.” In a written statement by the Foreign Ministry, which Rodríguez himself read aloud, he “energetically protest[ed] and denounc[ed] this unfounded and unacceptable decision, as well as the pretext used to justify it that the government of Cuba has not adopted all the adequate measures to prevent the alleged incidents.”

“The government of the United States is responding in a precipitated, inappropriate, and irreflexive manner, without evidence regarding the occurrence of the deeds mentioned, in which Cuba has absolutely no responsibility and without having concluded the investigation currently underway,” the statement continued.

Rodríguez went on to accuse the United States of “a lack of direct access to the affected and the doctors who examined them; the belated submission of unsubstantiated evidence; the absence of trustworthy primary information; and an inability to trade [intelligence] with experts in the United States who have knowledge on deeds of this nature and the technology needed to execute them, despite repeatedly highlighting it as necessary to advance the investigation.”

“The lack of seriousness in this [investigation] is surprising,” Rodríguez railed, adding that the Cuban government does not possess any technology which could cause the allegedly acoustic attacks in question. Former Cuban political prisoners have testified to being tortured by Cuban officials with sonic devices in prison, long before the State Department revealed such attacks were occurring.

Rodríguez further condemned the expulsion of Cuban diplomats as “eminently political” and “only benefitting those who wish to derail the possibility that relations between the two countries continue to advance.”

During the daily press briefing on Tuesday, State Department spokeswoman Heather Nauert confirmed once again the health symptoms of the diplomats in question, without elaborating on what those symptoms are, citing medical privacy. She noted that the total number of cases of such attacks now stands at 22. Reports from major news outlets described the symptoms as brain damage, hearing loss, migraines, and other “concussion-like” symptoms, and suggest that an acoustic weapon could have been used against the diplomats.

The decision to expel the Cuban diplomats, an official explained on a press briefing call Tuesday, “was made due to Cuba’s failure to take appropriate steps to protect our diplomats in accordance with its obligations under the Vienna Convention. This order will ensure equity in our respective diplomatic operations.”